top side of one of the Gecarcinus quadratus - which scurry everywhere in the leaf litter of the jungle floor -also known as red land crab, whitespot crab, halloween crab, moon crab, halloween moon crab, mouthless crab or harlequin land crab Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Class: Malacostraca Order: Decapoda Infraorder: Brachyura Family: Gecarcinidae Genus: Gecarcinus Species: G. quadratus